Gren thint sin (A+i6) = xtiy, 28 Prove that, 9父+ =1 snh'B 1) x essec?A -y' sec'A =1

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A: NOTE: Refresh your page if you can't see any equations. . use the formula…

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A: Consider the given information: Let u(x)=Fsin(nπ)x           ..(1)…

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Q: 4. J S (esc²a – co sec 0 tand) d0 - -

A: Explained below...